82 lines
2.7 KiB
C#
82 lines
2.7 KiB
C#
using System;
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using System.Configuration;
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using System.Web;
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using Newtonsoft.Json;
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/// <summary>
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/// recaptcha 的摘要描述
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/// </summary>
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namespace MyWeb
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{
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public class Recaptcha : function
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{
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public string Sitekey { get; set; }
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public string Secret { get; set; }
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public Recaptcha()
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{
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Sitekey = ConfigurationManager.AppSettings["recaptchaSitekey"].ToString();
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Secret = ConfigurationManager.AppSettings["recaptchaSecret"].ToString();
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}
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public bool Used
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{
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get { return !isStrNull(Sitekey) && !isStrNull(Secret) ? true : false; }
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}
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public string HeaderCode(bool inUpdatePanel = false)
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{
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//若要指定語系，在api.js加上 hl=語系代碼
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string js = "<script src=\"https://www.google.com/recaptcha/api.js" + (inUpdatePanel ? "?onload=onloadCallback&render=explicit" : "") + "\" async defer></script>";
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if (inUpdatePanel)
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js += "<script> var onloadCallback = function () {grecaptcha.render('recaptcha', {'sitekey': '" + Sitekey + "' }); };</script>";
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return js;
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}
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public string Embed()
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{
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return "<div id=\"recaptcha\" class=\"g-recaptcha\" data-sitekey=\"" + Sitekey + "\"></div>";
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}
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public bool Verification(System.Web.UI.UpdatePanel upl = null)
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{
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if (upl != null)
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AjaxRecaptcha(upl);
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if (!isStrNull(HttpContext.Current.Request["g-recaptcha-response"]))
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{
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string postData = "response=" + HttpContext.Current.Request["g-recaptcha-response"].ToString() + "&secret=" + Secret; //要post的資料
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WreqInfo info = WRequest("https://www.google.com/recaptcha/api/siteverify", Method.POST, postData);
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if (isStrNull(info.log))
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{
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Json result = JsonConvert.DeserializeObject<Json>(info.data);
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if (result.success)
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return true;
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}
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else
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{
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//Response.Write(info.log);
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}
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}
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return false;
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}
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public void AjaxRecaptcha(System.Web.UI.UpdatePanel upl)
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{
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System.Web.UI.ScriptManager.RegisterStartupScript(upl, upl.GetType(), "loadCaptcha", "grecaptcha.render('recaptcha', {'sitekey': '" + Sitekey + "' });", true);
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}
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public class Json
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{
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public bool success { get; set; }
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public DateTime challenge_ts { get; set; }
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public string hostname { get; set; }
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}
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}
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}
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